Ok if you still have the pipe cleaner then your missing some evidence. Remember the cross thing on the window? Well look at the shadow it casts on th floor. Run your cursor over the shadow and you should see a magnifying glass then you need to click there. Once you get a close up of the floor boards use the pipe cleaner to pry up the plank. There are 4 numbers on the back of the plank. Then you need to put it in one of the evidence plastic bags and take a picture of that and you should be done.